Movers Connection Question

I moved about 11 mos ago to a house that already had a DTV dish and I just hooked up my equipment and never told them I moved (I'm just down the street). I was ordering a new upgraded DTivo from Weaknees and needed the address to match DTV. I call DTV and told them I moved (my plan was to just get the newest dish and swap it myself when I upgrade to HD). The CSR told would not just ship me a new dish (plus contract extention etc) but told me I had to have it installed.
They are coming tomorrow. Will it be the new 3 Lnb dish and also will I get in trouble since there is already a dish there?